Glaciation of Canada - The INFORMATION hUB

Glaciation of Canada - The INFORMATION hUB

Glaciation of Canada Glaciers

Definition = large, moving mass of ice that shapes the landscape by eroding, transporting, and depositing huge volumes of rocks and sediments

Glaciers and the Great Lakes COVERING ALL OF CANADA! (Except highest peaks) How Glaciers Move Pressure underneath glacier + gravity = moving glacier

Formation ice moves like a very thick liquid Three Zones Zone of Accumulation (more new snow than

melting & evaporation) Balance Area or Equilibrium Line (No change) Zone of Ablation (more melting than new snow)

There are two types of Glaciers ALPINE CONTINENTAL

Their movement is mainly due to gravity They move due to their own

weight Some still exist in the western mountains

The northern ice cap is one of these U-Shaped Valley Glaciers pass through jagged mountain valleys making them

smooth and u-shaped after the ice retreats. Striations Rocks are carried in the bottom of a glacier act like cutting tools.

The direction of these grooves shows which way the glacier traveled. Till This is the material picked up and carried by the glacier. It is made

up of everything from very fine particles of sand, to huge boulders. Till Plain When the ice melts and leaves a layer of till behind, it is called a till plain. It is flat or gently rolling. They are very useful as farmland,

due to the rich deep soil left behind. Moraines These are ridges of till left either at the front or sides of a glacier as

it retreats. Oak Ridges Moraine Drumlin

These are egg shaped hills of deposited material from a glacier. Erratic: Large rock carried by the ice. Esker

A long sinuous ridge of sand and gravel deposited by water flowing under a glacier or ice sheet. Kettle Lakes: Former ice blocks that have melted

Kame: Material deposited through holes in the ice

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